Swbuda,
Are you going to have live plants? If so, you may not want a HOB filter. It's good to have very little surface agitation in a planted aquarium. (and, I'm envious of the size tank you are getting..) Photos are required!
I strongly agree with the combined use of a canister and a HOB.
(eg Eheim canister with an Aquaclear). Increased felxibility, and if one needs to be broken down for maintenance the other is still left undisturbed.